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<a href="a01049.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// MT-optimized allocator -*- C++ -*-</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> </div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Copyright (C) 2003-2018 Free Software Foundation, Inc.</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">//</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// This file is part of the GNU ISO C++ Library. This library is free</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// software; you can redistribute it and/or modify it under the</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// terms of the GNU General Public License as published by the</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// Free Software Foundation; either version 3, or (at your option)</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// any later version.</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// This library is distributed in the hope that it will be useful,</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// GNU General Public License for more details.</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">// Under Section 7 of GPL version 3, you are granted additional</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// permissions described in the GCC Runtime Library Exception, version</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">// 3.1, as published by the Free Software Foundation.</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// You should have received a copy of the GNU General Public License and</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// a copy of the GCC Runtime Library Exception along with this program;</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// <http://www.gnu.org/licenses/>.</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"></span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">/** @file ext/mt_allocator.h</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * This file is a GNU extension to the Standard C++ Library.</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> */</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#ifndef _MT_ALLOCATOR_H</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#define _MT_ALLOCATOR_H 1</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include <<a class="code" href="a00032.html">new</a>></span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include <<a class="code" href="a00242.html">cstdlib</a>></span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include <<a class="code" href="a00356.html">bits/functexcept.h</a>></span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include <<a class="code" href="a01022.html">ext/atomicity.h</a>></span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include <<a class="code" href="a00422.html">bits/move.h</a>></span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#if __cplusplus >= 201103L</span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#include <<a class="code" href="a00167.html">type_traits</a>></span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="keyword">namespace </span><a class="code" href="a01544.html">__gnu_cxx</a> _GLIBCXX_VISIBILITY(default)</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> {</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> _GLIBCXX_BEGIN_NAMESPACE_VERSION</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keyword">using</span> std::size_t;</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keyword">using</span> std::ptrdiff_t;</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">typedef</span> void (*__destroy_handler)(<span class="keywordtype">void</span>*);</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"></span></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"> /// Base class for pool object.</span></div><div class="line"><a name="l00051"></a><span class="lineno"><a class="line" href="a10328.html"> 51</a></span> <span class="comment"></span> <span class="keyword">struct </span><a class="code" href="a10328.html">__pool_base</a></div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  {</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="comment">// Using short int as type for the binmap implies we are never</span></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="comment">// caching blocks larger than 32768 with this allocator.</span></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keyword">typedef</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> <span class="keywordtype">int</span> _Binmap_type;</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> </div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="comment">// Variables used to configure the behavior of the allocator,</span></div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="comment">// assigned and explained in detail below.</span></div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">struct </span>_Tune</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  {</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="comment">// Compile time constants for the default _Tune values.</span></div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keyword">enum</span> { _S_align = 8 };</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keyword">enum</span> { _S_max_bytes = 128 };</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keyword">enum</span> { _S_min_bin = 8 };</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keyword">enum</span> { _S_chunk_size = 4096 - 4 * <span class="keyword">sizeof</span>(<span class="keywordtype">void</span>*) };</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keyword">enum</span> { _S_max_threads = 4096 };</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keyword">enum</span> { _S_freelist_headroom = 10 };</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="comment">// Alignment needed.</span></div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="comment">// NB: In any case must be >= sizeof(_Block_record), that</span></div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="comment">// is 4 on 32 bit machines and 8 on 64 bit machines.</span></div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordtype">size_t</span> _M_align;</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  </div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="comment">// Allocation requests (after round-up to power of 2) below</span></div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="comment">// this value will be handled by the allocator. A raw new/</span></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="comment">// call will be used for requests larger than this value.</span></div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="comment">// NB: Must be much smaller than _M_chunk_size and in any</span></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="comment">// case <= 32768.</span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordtype">size_t</span> _M_max_bytes; </div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="comment">// Size in bytes of the smallest bin.</span></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="comment">// NB: Must be a power of 2 and >= _M_align (and of course</span></div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="comment">// much smaller than _M_max_bytes).</span></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordtype">size_t</span> _M_min_bin;</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="comment">// In order to avoid fragmenting and minimize the number of</span></div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="comment">// new() calls we always request new memory using this</span></div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="comment">// value. Based on previous discussions on the libstdc++</span></div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="comment">// mailing list we have chosen the value below.</span></div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="comment">// See http://gcc.gnu.org/ml/libstdc++/2001-07/msg00077.html</span></div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="comment">// NB: At least one order of magnitude > _M_max_bytes. </span></div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordtype">size_t</span> _M_chunk_size;</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="comment">// The maximum number of supported threads. For</span></div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="comment">// single-threaded operation, use one. Maximum values will</span></div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="comment">// vary depending on details of the underlying system. (For</span></div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="comment">// instance, Linux 2.4.18 reports 4070 in</span></div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="comment">// /proc/sys/kernel/threads-max, while Linux 2.6.6 reports</span></div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="comment">// 65534)</span></div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordtype">size_t</span> _M_max_threads;</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="comment">// Each time a deallocation occurs in a threaded application</span></div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="comment">// we make sure that there are no more than</span></div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="comment">// _M_freelist_headroom % of used memory on the freelist. If</span></div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="comment">// the number of additional records is more than</span></div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="comment">// _M_freelist_headroom % of the freelist, we move these</span></div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="comment">// records back to the global pool.</span></div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordtype">size_t</span> _M_freelist_headroom;</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  </div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="comment">// Set to true forces all allocations to use new().</span></div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordtype">bool</span> _M_force_new; </div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  </div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keyword">explicit</span></div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  _Tune()</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  : _M_align(_S_align), _M_max_bytes(_S_max_bytes), _M_min_bin(_S_min_bin),</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  _M_chunk_size(_S_chunk_size), _M_max_threads(_S_max_threads), </div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  _M_freelist_headroom(_S_freelist_headroom), </div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  _M_force_new(std::getenv(<span class="stringliteral">"GLIBCXX_FORCE_NEW"</span>) ? <span class="keyword">true</span> : <span class="keyword">false</span>)</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  { }</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span> </div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keyword">explicit</span></div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  _Tune(<span class="keywordtype">size_t</span> __align, <span class="keywordtype">size_t</span> __maxb, <span class="keywordtype">size_t</span> __minbin, <span class="keywordtype">size_t</span> __chunk, </div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keywordtype">size_t</span> __maxthreads, <span class="keywordtype">size_t</span> __headroom, <span class="keywordtype">bool</span> __force) </div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  : _M_align(__align), _M_max_bytes(__maxb), _M_min_bin(__minbin),</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  _M_chunk_size(__chunk), _M_max_threads(__maxthreads),</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  _M_freelist_headroom(__headroom), _M_force_new(__force)</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  { }</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  };</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  </div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keyword">struct </span>_Block_address</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  {</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordtype">void</span>* _M_initial;</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  _Block_address* _M_next;</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  };</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  </div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keyword">const</span> _Tune&</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  _M_get_options()<span class="keyword"> const</span></div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_options; }</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span> </div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  _M_set_options(_Tune __t)</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  { </div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordflow">if</span> (!_M_init)</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  _M_options = __t;</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  }</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span> </div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordtype">bool</span></div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  _M_check_threshold(<span class="keywordtype">size_t</span> __bytes)</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  { <span class="keywordflow">return</span> __bytes > _M_options._M_max_bytes || _M_options._M_force_new; }</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span> </div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordtype">size_t</span></div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  _M_get_binmap(<span class="keywordtype">size_t</span> __bytes)</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  { <span class="keywordflow">return</span> _M_binmap[__bytes]; }</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span> </div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordtype">size_t</span></div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  _M_get_align()</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  { <span class="keywordflow">return</span> _M_options._M_align; }</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keyword">explicit</span> </div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <a class="code" href="a10328.html">__pool_base</a>() </div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  : _M_options(_Tune()), _M_binmap(0), _M_init(<span class="keyword">false</span>) { }</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span> </div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keyword">explicit</span> </div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <a class="code" href="a10328.html">__pool_base</a>(<span class="keyword">const</span> _Tune& __options)</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  : _M_options(__options), _M_binmap(0), _M_init(<span class="keyword">false</span>) { }</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span> </div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keyword">explicit</span> </div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <a class="code" href="a10328.html">__pool_base</a>(<span class="keyword">const</span> <a class="code" href="a10328.html">__pool_base</a>&);</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span> </div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <a class="code" href="a10328.html">__pool_base</a>&</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  operator=(<span class="keyword">const</span> <a class="code" href="a10328.html">__pool_base</a>&);</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="comment">// Configuration options.</span></div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  _Tune _M_options;</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  </div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  _Binmap_type* _M_binmap;</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span> </div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="comment">// Configuration of the pool object via _M_options can happen</span></div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="comment">// after construction but before initialization. After</span></div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="comment">// initialization is complete, this variable is set to true.</span></div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordtype">bool</span> _M_init;</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  };</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span> </div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="comment"></span></div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="comment"> /**</span></div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="comment"> * @brief Data describing the underlying memory pool, parameterized on</span></div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span> <span class="comment"> * threading support.</span></div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span> <span class="comment"> */</span></div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keyword">template</span><<span class="keywordtype">bool</span> _Thread></div><div class="line"><a name="l00192"></a><span class="lineno"><a class="line" href="a10340.html"> 192</a></span>  <span class="keyword">class </span><a class="code" href="a10340.html">__pool</a>;</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="comment"></span></div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="comment"> /// Specialization for single thread.</span></div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span> <span class="comment"></span> <span class="keyword">template</span><></div><div class="line"><a name="l00196"></a><span class="lineno"><a class="line" href="a10344.html"> 196</a></span>  <span class="keyword">class </span><a class="code" href="a10340.html">__pool</a><false> : <span class="keyword">public</span> <a class="code" href="a10328.html">__pool_base</a></div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  {</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keyword">union </span>_Block_record</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  {</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="comment">// Points to the block_record of the next free block.</span></div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  _Block_record* _M_next;</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  };</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span> </div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keyword">struct </span>_Bin_record</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  {</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="comment">// An "array" of pointers to the first free block.</span></div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  _Block_record** _M_first;</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span> </div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="comment">// A list of the initial addresses of all allocated blocks.</span></div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  _Block_address* _M_address;</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  };</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  </div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  _M_initialize_once()</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  {</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordflow">if</span> (__builtin_expect(_M_init == <span class="keyword">false</span>, <span class="keyword">false</span>))</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  _M_initialize();</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  }</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span> </div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  _M_destroy() <span class="keywordflow">throw</span>();</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span> </div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordtype">char</span>* </div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  _M_reserve_block(<span class="keywordtype">size_t</span> __bytes, <span class="keyword">const</span> <span class="keywordtype">size_t</span> __thread_id);</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  </div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  _M_reclaim_block(<span class="keywordtype">char</span>* __p, <span class="keywordtype">size_t</span> __bytes) <span class="keywordflow">throw</span> ();</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  </div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="keywordtype">size_t</span> </div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  _M_get_thread_id() { <span class="keywordflow">return</span> 0; }</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  </div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keyword">const</span> _Bin_record&</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  _M_get_bin(<span class="keywordtype">size_t</span> __which)</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  { <span class="keywordflow">return</span> _M_bin[__which]; }</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  </div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  _M_adjust_freelist(<span class="keyword">const</span> _Bin_record&, _Block_record*, <span class="keywordtype">size_t</span>)</div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  { }</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span> </div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keyword">explicit</span> <a class="code" href="a10340.html">__pool</a>() </div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  : _M_bin(0), _M_bin_size(1) { }</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span> </div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="keyword">explicit</span> <a class="code" href="a10340.html">__pool</a>(<span class="keyword">const</span> __pool_base::_Tune& __tune) </div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  : <a class="code" href="a10328.html">__pool_base</a>(__tune), _M_bin(0), _M_bin_size(1) { }</div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span> </div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="comment">// An "array" of bin_records each of which represents a specific</span></div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="comment">// power of 2 size. Memory to this "array" is allocated in</span></div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="comment">// _M_initialize().</span></div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  _Bin_record* _M_bin;</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  </div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="comment">// Actual value calculated in _M_initialize().</span></div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keywordtype">size_t</span> _M_bin_size; </div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span> </div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  _M_initialize();</div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  };</div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  </div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span> <span class="preprocessor">#ifdef __GTHREADS</span></div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="comment"> /// Specialization for thread enabled, via gthreads.h.</span></div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span> <span class="comment"></span> <span class="keyword">template</span><></div><div class="line"><a name="l00263"></a><span class="lineno"><a class="line" href="a10356.html"> 263</a></span>  <span class="keyword">class </span><a class="code" href="a10340.html">__pool</a><true> : <span class="keyword">public</span> <a class="code" href="a10328.html">__pool_base</a></div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  {</div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="comment">// Each requesting thread is assigned an id ranging from 1 to</span></div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="comment">// _S_max_threads. Thread id 0 is used as a global memory pool.</span></div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="comment">// In order to get constant performance on the thread assignment</span></div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="comment">// routine, we keep a list of free ids. When a thread first</span></div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  <span class="comment">// requests memory we remove the first record in this list and</span></div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <span class="comment">// stores the address in a __gthread_key. When initializing the</span></div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="comment">// __gthread_key we specify a destructor. When this destructor</span></div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="comment">// (i.e. the thread dies) is called, we return the thread id to</span></div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="comment">// the front of this list.</span></div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="keyword">struct </span>_Thread_record</div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  {</div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="comment">// Points to next free thread id record. NULL if last record in list.</span></div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  _Thread_record* _M_next;</div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  </div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <span class="comment">// Thread id ranging from 1 to _S_max_threads.</span></div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <span class="keywordtype">size_t</span> _M_id;</div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  };</div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  </div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="keyword">union </span>_Block_record</div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  {</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="comment">// Points to the block_record of the next free block.</span></div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  _Block_record* _M_next;</div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  </div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  <span class="comment">// The thread id of the thread which has requested this block.</span></div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="keywordtype">size_t</span> _M_thread_id;</div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  };</div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  </div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="keyword">struct </span>_Bin_record</div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  {</div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <span class="comment">// An "array" of pointers to the first free block for each</span></div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <span class="comment">// thread id. Memory to this "array" is allocated in</span></div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="comment">// _S_initialize() for _S_max_threads + global pool 0.</span></div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  _Block_record** _M_first;</div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  </div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="comment">// A list of the initial addresses of all allocated blocks.</span></div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  _Block_address* _M_address;</div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span> </div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  <span class="comment">// An "array" of counters used to keep track of the amount of</span></div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="comment">// blocks that are on the freelist/used for each thread id.</span></div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <span class="comment">// - Note that the second part of the allocated _M_used "array"</span></div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  <span class="comment">// actually hosts (atomic) counters of reclaimed blocks: in</span></div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  <span class="comment">// _M_reserve_block and in _M_reclaim_block those numbers are</span></div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="comment">// subtracted from the first ones to obtain the actual size</span></div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  <span class="comment">// of the "working set" of the given thread.</span></div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <span class="comment">// - Memory to these "arrays" is allocated in _S_initialize()</span></div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <span class="comment">// for _S_max_threads + global pool 0.</span></div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  <span class="keywordtype">size_t</span>* _M_free;</div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  <span class="keywordtype">size_t</span>* _M_used;</div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  </div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  <span class="comment">// Each bin has its own mutex which is used to ensure data</span></div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  <span class="comment">// integrity while changing "ownership" on a block. The mutex</span></div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  <span class="comment">// is initialized in _S_initialize().</span></div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  __gthread_mutex_t* _M_mutex;</div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  };</div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  </div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="comment">// XXX GLIBCXX_ABI Deprecated</span></div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  _M_initialize(__destroy_handler);</div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span> </div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  _M_initialize_once()</div><div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  {</div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="keywordflow">if</span> (__builtin_expect(_M_init == <span class="keyword">false</span>, <span class="keyword">false</span>))</div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  _M_initialize();</div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  }</div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span> </div><div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  _M_destroy() <span class="keywordflow">throw</span>();</div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span> </div><div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  <span class="keywordtype">char</span>* </div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  _M_reserve_block(<span class="keywordtype">size_t</span> __bytes, <span class="keyword">const</span> <span class="keywordtype">size_t</span> __thread_id);</div><div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  </div><div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  _M_reclaim_block(<span class="keywordtype">char</span>* __p, <span class="keywordtype">size_t</span> __bytes) <span class="keywordflow">throw</span> ();</div><div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  </div><div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  <span class="keyword">const</span> _Bin_record&</div><div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  _M_get_bin(<span class="keywordtype">size_t</span> __which)</div><div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  { <span class="keywordflow">return</span> _M_bin[__which]; }</div><div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  </div><div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  _M_adjust_freelist(<span class="keyword">const</span> _Bin_record& __bin, _Block_record* __block, </div><div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  <span class="keywordtype">size_t</span> __thread_id)</div><div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  {</div><div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="keywordflow">if</span> (__gthread_active_p())</div><div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  {</div><div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  __block->_M_thread_id = __thread_id;</div><div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  --__bin._M_free[__thread_id];</div><div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  ++__bin._M_used[__thread_id];</div><div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  }</div><div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  }</div><div class="line"><a name="l00356"></a><span class="lineno"> 356</span> </div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <span class="comment">// XXX GLIBCXX_ABI Deprecated</span></div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  _M_destroy_thread_key(<span class="keywordtype">void</span>*) <span class="keywordflow">throw</span> ();</div><div class="line"><a name="l00360"></a><span class="lineno"> 360</span> </div><div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <span class="keywordtype">size_t</span> </div><div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  _M_get_thread_id();</div><div class="line"><a name="l00363"></a><span class="lineno"> 363</span> </div><div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  <span class="keyword">explicit</span> <a class="code" href="a10340.html">__pool</a>() </div><div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  : _M_bin(0), _M_bin_size(1), _M_thread_freelist(0) </div><div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  { }</div><div class="line"><a name="l00367"></a><span class="lineno"> 367</span> </div><div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="keyword">explicit</span> <a class="code" href="a10340.html">__pool</a>(<span class="keyword">const</span> __pool_base::_Tune& __tune) </div><div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  : <a class="code" href="a10328.html">__pool_base</a>(__tune), _M_bin(0), _M_bin_size(1), </div><div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  _M_thread_freelist(0) </div><div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  { }</div><div class="line"><a name="l00372"></a><span class="lineno"> 372</span> </div><div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <span class="comment">// An "array" of bin_records each of which represents a specific</span></div><div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  <span class="comment">// power of 2 size. Memory to this "array" is allocated in</span></div><div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <span class="comment">// _M_initialize().</span></div><div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  _Bin_record* _M_bin;</div><div class="line"><a name="l00378"></a><span class="lineno"> 378</span> </div><div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <span class="comment">// Actual value calculated in _M_initialize().</span></div><div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="keywordtype">size_t</span> _M_bin_size;</div><div class="line"><a name="l00381"></a><span class="lineno"> 381</span> </div><div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  _Thread_record* _M_thread_freelist;</div><div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  <span class="keywordtype">void</span>* _M_thread_freelist_initial;</div><div class="line"><a name="l00384"></a><span class="lineno"> 384</span> </div><div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  _M_initialize();</div><div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  };</div><div class="line"><a name="l00388"></a><span class="lineno"> 388</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00389"></a><span class="lineno"> 389</span> </div><div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  <span class="keyword">template</span><<span class="keyword">template</span> <<span class="keywordtype">bool</span>> <span class="keyword">class </span>_PoolTp, <span class="keywordtype">bool</span> _Thread></div><div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <span class="keyword">struct </span>__common_pool</div><div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  {</div><div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  <span class="keyword">typedef</span> _PoolTp<_Thread> pool_type;</div><div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  </div><div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  <span class="keyword">static</span> pool_type&</div><div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  _S_get_pool()</div><div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  { </div><div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  <span class="keyword">static</span> pool_type _S_pool;</div><div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  <span class="keywordflow">return</span> _S_pool;</div><div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  }</div><div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  };</div><div class="line"><a name="l00402"></a><span class="lineno"> 402</span> </div><div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="keyword">template</span><<span class="keyword">template</span> <<span class="keywordtype">bool</span>> <span class="keyword">class </span>_PoolTp, <span class="keywordtype">bool</span> _Thread></div><div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  <span class="keyword">struct </span>__common_pool_base;</div><div class="line"><a name="l00405"></a><span class="lineno"> 405</span> </div><div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  <span class="keyword">template</span><<span class="keyword">template</span> <<span class="keywordtype">bool</span>> <span class="keyword">class </span>_PoolTp></div><div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  <span class="keyword">struct </span>__common_pool_base<_PoolTp, false> </div><div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  : <span class="keyword">public</span> __common_pool<_PoolTp, false></div><div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  {</div><div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  <span class="keyword">using</span> __common_pool<_PoolTp, false>::_S_get_pool;</div><div class="line"><a name="l00411"></a><span class="lineno"> 411</span> </div><div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  <span class="keyword">static</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  _S_initialize_once()</div><div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  {</div><div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <span class="keyword">static</span> <span class="keywordtype">bool</span> __init;</div><div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  <span class="keywordflow">if</span> (__builtin_expect(__init == <span class="keyword">false</span>, <span class="keyword">false</span>))</div><div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  {</div><div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  _S_get_pool()._M_initialize_once(); </div><div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  __init = <span class="keyword">true</span>;</div><div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  }</div><div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  }</div><div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  };</div><div class="line"><a name="l00423"></a><span class="lineno"> 423</span> </div><div class="line"><a name="l00424"></a><span class="lineno"> 424</span> <span class="preprocessor">#ifdef __GTHREADS</span></div><div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  <span class="keyword">template</span><<span class="keyword">template</span> <<span class="keywordtype">bool</span>> <span class="keyword">class </span>_PoolTp></div><div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  <span class="keyword">struct </span>__common_pool_base<_PoolTp, true></div><div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  : <span class="keyword">public</span> __common_pool<_PoolTp, true></div><div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  {</div><div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <span class="keyword">using</span> __common_pool<_PoolTp, true>::_S_get_pool;</div><div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  </div><div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  <span class="keyword">static</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  _S_initialize() </div><div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  { _S_get_pool()._M_initialize_once(); }</div><div class="line"><a name="l00434"></a><span class="lineno"> 434</span> </div><div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  <span class="keyword">static</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  _S_initialize_once()</div><div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  { </div><div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <span class="keyword">static</span> <span class="keywordtype">bool</span> __init;</div><div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  <span class="keywordflow">if</span> (__builtin_expect(__init == <span class="keyword">false</span>, <span class="keyword">false</span>))</div><div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  {</div><div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  <span class="keywordflow">if</span> (__gthread_active_p())</div><div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  {</div><div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  <span class="comment">// On some platforms, __gthread_once_t is an aggregate.</span></div><div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  <span class="keyword">static</span> __gthread_once_t __once = __GTHREAD_ONCE_INIT;</div><div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  __gthread_once(&__once, _S_initialize);</div><div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  }</div><div class="line"><a name="l00447"></a><span class="lineno"> 447</span> </div><div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  <span class="comment">// Double check initialization. May be necessary on some</span></div><div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  <span class="comment">// systems for proper construction when not compiling with</span></div><div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  <span class="comment">// thread flags.</span></div><div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  _S_get_pool()._M_initialize_once(); </div><div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  __init = <span class="keyword">true</span>;</div><div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  }</div><div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  }</div><div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  };</div><div class="line"><a name="l00456"></a><span class="lineno"> 456</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00457"></a><span class="lineno"> 457</span> <span class="comment"></span></div><div class="line"><a name="l00458"></a><span class="lineno"> 458</span> <span class="comment"> /// Policy for shared __pool objects.</span></div><div class="line"><a name="l00459"></a><span class="lineno"> 459</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">template</span> <<span class="keywordtype">bool</span>> <span class="keyword">class </span>_PoolTp, <span class="keywordtype">bool</span> _Thread></div><div class="line"><a name="l00460"></a><span class="lineno"><a class="line" href="a10388.html"> 460</a></span>  <span class="keyword">struct </span><a class="code" href="a10388.html">__common_pool_policy</a> : <span class="keyword">public</span> __common_pool_base<_PoolTp, _Thread></div><div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  {</div><div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp1, <span class="keyword">template</span> <<span class="keywordtype">bool</span>> <span class="keyword">class </span>_PoolTp1 = _PoolTp, </div><div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  <span class="keywordtype">bool</span> _Thread1 = _Thread></div><div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  <span class="keyword">struct </span>_M_rebind</div><div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  { <span class="keyword">typedef</span> <a class="code" href="a10388.html">__common_pool_policy<_PoolTp1, _Thread1></a> other; };</div><div class="line"><a name="l00466"></a><span class="lineno"> 466</span> </div><div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  <span class="keyword">using</span> __common_pool_base<_PoolTp, _Thread>::_S_get_pool;</div><div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  <span class="keyword">using</span> __common_pool_base<_PoolTp, _Thread>::_S_initialize_once;</div><div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  };</div><div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  </div><div class="line"><a name="l00471"></a><span class="lineno"> 471</span> </div><div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp, <span class="keyword">template</span> <<span class="keywordtype">bool</span>> <span class="keyword">class </span>_PoolTp, <span class="keywordtype">bool</span> _Thread></div><div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  <span class="keyword">struct </span>__per_type_pool</div><div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  {</div><div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  <span class="keyword">typedef</span> _Tp value_type;</div><div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  <span class="keyword">typedef</span> _PoolTp<_Thread> pool_type;</div><div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  </div><div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  <span class="keyword">static</span> pool_type&</div><div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  _S_get_pool()</div><div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  { </div><div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  <span class="comment">// Sane defaults for the _PoolTp.</span></div><div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> pool_type::_Block_record _Block_record;</div><div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  <span class="keyword">const</span> <span class="keyword">static</span> <span class="keywordtype">size_t</span> __a = (__alignof__(_Tp) >= <span class="keyword">sizeof</span>(_Block_record)</div><div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  ? __alignof__(_Tp) : <span class="keyword">sizeof</span>(_Block_record));</div><div class="line"><a name="l00485"></a><span class="lineno"> 485</span> </div><div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> __pool_base::_Tune _Tune;</div><div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  <span class="keyword">static</span> _Tune _S_tune(__a, <span class="keyword">sizeof</span>(_Tp) * 64,</div><div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  <span class="keyword">sizeof</span>(_Tp) * 2 >= __a ? <span class="keyword">sizeof</span>(_Tp) * 2 : __a,</div><div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  <span class="keyword">sizeof</span>(_Tp) * <span class="keywordtype">size_t</span>(_Tune::_S_chunk_size),</div><div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  _Tune::_S_max_threads,</div><div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  _Tune::_S_freelist_headroom,</div><div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  std::getenv(<span class="stringliteral">"GLIBCXX_FORCE_NEW"</span>) ? <span class="keyword">true</span> : <span class="keyword">false</span>);</div><div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  <span class="keyword">static</span> pool_type _S_pool(_S_tune);</div><div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  <span class="keywordflow">return</span> _S_pool;</div><div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  }</div><div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  };</div><div class="line"><a name="l00497"></a><span class="lineno"> 497</span> </div><div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp, <span class="keyword">template</span> <<span class="keywordtype">bool</span>> <span class="keyword">class </span>_PoolTp, <span class="keywordtype">bool</span> _Thread></div><div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  <span class="keyword">struct </span>__per_type_pool_base;</div><div class="line"><a name="l00500"></a><span class="lineno"> 500</span> </div><div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp, <span class="keyword">template</span> <<span class="keywordtype">bool</span>> <span class="keyword">class </span>_PoolTp></div><div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  <span class="keyword">struct </span>__per_type_pool_base<_Tp, _PoolTp, false> </div><div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  : <span class="keyword">public</span> __per_type_pool<_Tp, _PoolTp, false> </div><div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  {</div><div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  <span class="keyword">using</span> __per_type_pool<_Tp, _PoolTp, false>::_S_get_pool;</div><div class="line"><a name="l00506"></a><span class="lineno"> 506</span> </div><div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  <span class="keyword">static</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  _S_initialize_once()</div><div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  {</div><div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  <span class="keyword">static</span> <span class="keywordtype">bool</span> __init;</div><div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  <span class="keywordflow">if</span> (__builtin_expect(__init == <span class="keyword">false</span>, <span class="keyword">false</span>))</div><div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  {</div><div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  _S_get_pool()._M_initialize_once(); </div><div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  __init = <span class="keyword">true</span>;</div><div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  }</div><div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  }</div><div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  };</div><div class="line"><a name="l00518"></a><span class="lineno"> 518</span> </div><div class="line"><a name="l00519"></a><span class="lineno"> 519</span> <span class="preprocessor"> #ifdef __GTHREADS</span></div><div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp, <span class="keyword">template</span> <<span class="keywordtype">bool</span>> <span class="keyword">class </span>_PoolTp></div><div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  <span class="keyword">struct </span>__per_type_pool_base<_Tp, _PoolTp, true> </div><div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  : <span class="keyword">public</span> __per_type_pool<_Tp, _PoolTp, true> </div><div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  {</div><div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  <span class="keyword">using</span> __per_type_pool<_Tp, _PoolTp, true>::_S_get_pool;</div><div class="line"><a name="l00525"></a><span class="lineno"> 525</span> </div><div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  <span class="keyword">static</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  _S_initialize() </div><div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  { _S_get_pool()._M_initialize_once(); }</div><div class="line"><a name="l00529"></a><span class="lineno"> 529</span> </div><div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  <span class="keyword">static</span> <span class="keywordtype">void</span></div><div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  _S_initialize_once()</div><div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  { </div><div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  <span class="keyword">static</span> <span class="keywordtype">bool</span> __init;</div><div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  <span class="keywordflow">if</span> (__builtin_expect(__init == <span class="keyword">false</span>, <span class="keyword">false</span>))</div><div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  {</div><div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  <span class="keywordflow">if</span> (__gthread_active_p())</div><div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  {</div><div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  <span class="comment">// On some platforms, __gthread_once_t is an aggregate.</span></div><div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  <span class="keyword">static</span> __gthread_once_t __once = __GTHREAD_ONCE_INIT;</div><div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  __gthread_once(&__once, _S_initialize);</div><div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  }</div><div class="line"><a name="l00542"></a><span class="lineno"> 542</span> </div><div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  <span class="comment">// Double check initialization. May be necessary on some</span></div><div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  <span class="comment">// systems for proper construction when not compiling with</span></div><div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  <span class="comment">// thread flags.</span></div><div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  _S_get_pool()._M_initialize_once(); </div><div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  __init = <span class="keyword">true</span>;</div><div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  }</div><div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  }</div><div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  };</div><div class="line"><a name="l00551"></a><span class="lineno"> 551</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00552"></a><span class="lineno"> 552</span> <span class="comment"></span></div><div class="line"><a name="l00553"></a><span class="lineno"> 553</span> <span class="comment"> /// Policy for individual __pool objects.</span></div><div class="line"><a name="l00554"></a><span class="lineno"> 554</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Tp, <span class="keyword">template</span> <<span class="keywordtype">bool</span>> <span class="keyword">class </span>_PoolTp, <span class="keywordtype">bool</span> _Thread></div><div class="line"><a name="l00555"></a><span class="lineno"><a class="line" href="a10412.html"> 555</a></span>  <span class="keyword">struct </span><a class="code" href="a10412.html">__per_type_pool_policy</a> </div><div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  : <span class="keyword">public</span> __per_type_pool_base<_Tp, _PoolTp, _Thread></div><div class="line"><a name="l00557"></a><span class="lineno"> 557</span>  {</div><div class="line"><a name="l00558"></a><span class="lineno"> 558</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp1, <span class="keyword">template</span> <<span class="keywordtype">bool</span>> <span class="keyword">class </span>_PoolTp1 = _PoolTp, </div><div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  <span class="keywordtype">bool</span> _Thread1 = _Thread></div><div class="line"><a name="l00560"></a><span class="lineno"> 560</span>  <span class="keyword">struct </span>_M_rebind</div><div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  { <span class="keyword">typedef</span> <a class="code" href="a10412.html">__per_type_pool_policy<_Tp1, _PoolTp1, _Thread1></a> other; };</div><div class="line"><a name="l00562"></a><span class="lineno"> 562</span> </div><div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  <span class="keyword">using</span> __per_type_pool_base<_Tp, _PoolTp, _Thread>::_S_get_pool;</div><div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  <span class="keyword">using</span> __per_type_pool_base<_Tp, _PoolTp, _Thread>::_S_initialize_once;</div><div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  };</div><div class="line"><a name="l00566"></a><span class="lineno"> 566</span> </div><div class="line"><a name="l00567"></a><span class="lineno"> 567</span> <span class="comment"></span></div><div class="line"><a name="l00568"></a><span class="lineno"> 568</span> <span class="comment"> /// Base class for _Tp dependent member functions.</span></div><div class="line"><a name="l00569"></a><span class="lineno"> 569</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div><div class="line"><a name="l00570"></a><span class="lineno"><a class="line" href="a10420.html"> 570</a></span>  <span class="keyword">class </span><a class="code" href="a10420.html">__mt_alloc_base</a> </div><div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  {</div><div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  <span class="keyword">typedef</span> <span class="keywordtype">size_t</span> size_type;</div><div class="line"><a name="l00574"></a><span class="lineno"> 574</span>  <span class="keyword">typedef</span> ptrdiff_t difference_type;</div><div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  <span class="keyword">typedef</span> _Tp* pointer;</div><div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  <span class="keyword">typedef</span> <span class="keyword">const</span> _Tp* const_pointer;</div><div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  <span class="keyword">typedef</span> _Tp& reference;</div><div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  <span class="keyword">typedef</span> <span class="keyword">const</span> _Tp& const_reference;</div><div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  <span class="keyword">typedef</span> _Tp value_type;</div><div class="line"><a name="l00580"></a><span class="lineno"> 580</span> </div><div class="line"><a name="l00581"></a><span class="lineno"> 581</span> <span class="preprocessor">#if __cplusplus >= 201103L</span></div><div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span></div><div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  <span class="comment">// 2103. propagate_on_container_move_assignment</span></div><div class="line"><a name="l00584"></a><span class="lineno"> 584</span>  <span class="keyword">typedef</span> <a class="code" href="a03040.html">std::true_type</a> <a class="code" href="a03040.html">propagate_on_container_move_assignment</a>;</div><div class="line"><a name="l00585"></a><span class="lineno"> 585</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00586"></a><span class="lineno"> 586</span> </div><div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  pointer</div><div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  address(reference __x) <span class="keyword">const</span> _GLIBCXX_NOEXCEPT</div><div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  { <span class="keywordflow">return</span> <a class="code" href="a01477.html#ga1954d5552e24586051011312041033f6">std::__addressof</a>(__x); }</div><div class="line"><a name="l00590"></a><span class="lineno"> 590</span> </div><div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  const_pointer</div><div class="line"><a name="l00592"></a><span class="lineno"> 592</span>  address(const_reference __x) <span class="keyword">const</span> _GLIBCXX_NOEXCEPT</div><div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  { <span class="keywordflow">return</span> <a class="code" href="a01477.html#ga1954d5552e24586051011312041033f6">std::__addressof</a>(__x); }</div><div class="line"><a name="l00594"></a><span class="lineno"> 594</span> </div><div class="line"><a name="l00595"></a><span class="lineno"> 595</span>  size_type</div><div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  max_size() <span class="keyword">const</span> _GLIBCXX_USE_NOEXCEPT </div><div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  { <span class="keywordflow">return</span> size_t(-1) / <span class="keyword">sizeof</span>(_Tp); }</div><div class="line"><a name="l00598"></a><span class="lineno"> 598</span> </div><div class="line"><a name="l00599"></a><span class="lineno"> 599</span> <span class="preprocessor">#if __cplusplus >= 201103L</span></div><div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Up, <span class="keyword">typename</span>... _Args></div><div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  construct(_Up* __p, _Args&&... __args)</div><div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  { ::new((<span class="keywordtype">void</span> *)__p) _Up(std::forward<_Args>(__args)...); }</div><div class="line"><a name="l00604"></a><span class="lineno"> 604</span> </div><div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Up></div><div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  <span class="keywordtype">void</span> </div><div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  destroy(_Up* __p) { __p->~_Up(); }</div><div class="line"><a name="l00608"></a><span class="lineno"> 608</span> <span class="preprocessor">#else</span></div><div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span></div><div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  <span class="comment">// 402. wrong new expression in [some_] allocator::construct</span></div><div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  <span class="keywordtype">void</span> </div><div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  construct(pointer __p, <span class="keyword">const</span> _Tp& __val) </div><div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  { ::new((<span class="keywordtype">void</span> *)__p) _Tp(__val); }</div><div class="line"><a name="l00614"></a><span class="lineno"> 614</span> </div><div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  <span class="keywordtype">void</span> </div><div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  destroy(pointer __p) { __p->~_Tp(); }</div><div class="line"><a name="l00617"></a><span class="lineno"> 617</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  };</div><div class="line"><a name="l00619"></a><span class="lineno"> 619</span> </div><div class="line"><a name="l00620"></a><span class="lineno"> 620</span> <span class="preprocessor">#ifdef __GTHREADS</span></div><div class="line"><a name="l00621"></a><span class="lineno"> 621</span> <span class="preprocessor">#define __thread_default true</span></div><div class="line"><a name="l00622"></a><span class="lineno"> 622</span> <span class="preprocessor">#else</span></div><div class="line"><a name="l00623"></a><span class="lineno"> 623</span> <span class="preprocessor">#define __thread_default false</span></div><div class="line"><a name="l00624"></a><span class="lineno"> 624</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00625"></a><span class="lineno"> 625</span> <span class="comment"></span></div><div class="line"><a name="l00626"></a><span class="lineno"> 626</span> <span class="comment"> /**</span></div><div class="line"><a name="l00627"></a><span class="lineno"> 627</span> <span class="comment"> * @brief This is a fixed size (power of 2) allocator which - when</span></div><div class="line"><a name="l00628"></a><span class="lineno"> 628</span> <span class="comment"> * compiled with thread support - will maintain one freelist per</span></div><div class="line"><a name="l00629"></a><span class="lineno"> 629</span> <span class="comment"> * size per thread plus a @a global one. Steps are taken to limit</span></div><div class="line"><a name="l00630"></a><span class="lineno"> 630</span> <span class="comment"> * the per thread freelist sizes (by returning excess back to</span></div><div class="line"><a name="l00631"></a><span class="lineno"> 631</span> <span class="comment"> * the @a global list).</span></div><div class="line"><a name="l00632"></a><span class="lineno"> 632</span> <span class="comment"> * @ingroup allocators</span></div><div class="line"><a name="l00633"></a><span class="lineno"> 633</span> <span class="comment"> *</span></div><div class="line"><a name="l00634"></a><span class="lineno"> 634</span> <span class="comment"> * Further details:</span></div><div class="line"><a name="l00635"></a><span class="lineno"> 635</span> <span class="comment"> * https://gcc.gnu.org/onlinedocs/libstdc++/manual/mt_allocator.html</span></div><div class="line"><a name="l00636"></a><span class="lineno"> 636</span> <span class="comment"> */</span></div><div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp, </div><div class="line"><a name="l00638"></a><span class="lineno"> 638</span>  <span class="keyword">typename</span> _Poolp = <a class="code" href="a10388.html">__common_pool_policy<__pool, __thread_default></a> ></div><div class="line"><a name="l00639"></a><span class="lineno"><a class="line" href="a10424.html"> 639</a></span>  <span class="keyword">class </span><a class="code" href="a10424.html">__mt_alloc</a> : <span class="keyword">public</span> <a class="code" href="a10420.html">__mt_alloc_base</a><_Tp></div><div class="line"><a name="l00640"></a><span class="lineno"> 640</span>  {</div><div class="line"><a name="l00641"></a><span class="lineno"> 641</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00642"></a><span class="lineno"> 642</span>  <span class="keyword">typedef</span> <span class="keywordtype">size_t</span> size_type;</div><div class="line"><a name="l00643"></a><span class="lineno"> 643</span>  <span class="keyword">typedef</span> ptrdiff_t difference_type;</div><div class="line"><a name="l00644"></a><span class="lineno"> 644</span>  <span class="keyword">typedef</span> _Tp* pointer;</div><div class="line"><a name="l00645"></a><span class="lineno"> 645</span>  <span class="keyword">typedef</span> <span class="keyword">const</span> _Tp* const_pointer;</div><div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  <span class="keyword">typedef</span> _Tp& reference;</div><div class="line"><a name="l00647"></a><span class="lineno"> 647</span>  <span class="keyword">typedef</span> <span class="keyword">const</span> _Tp& const_reference;</div><div class="line"><a name="l00648"></a><span class="lineno"> 648</span>  <span class="keyword">typedef</span> _Tp value_type;</div><div class="line"><a name="l00649"></a><span class="lineno"> 649</span>  <span class="keyword">typedef</span> _Poolp __policy_type;</div><div class="line"><a name="l00650"></a><span class="lineno"> 650</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> _Poolp::pool_type __pool_type;</div><div class="line"><a name="l00651"></a><span class="lineno"> 651</span> </div><div class="line"><a name="l00652"></a><span class="lineno"> 652</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Poolp1 = _Poolp></div><div class="line"><a name="l00653"></a><span class="lineno"> 653</span>  <span class="keyword">struct </span>rebind</div><div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  { </div><div class="line"><a name="l00655"></a><span class="lineno"> 655</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> _Poolp1::template _M_rebind<_Tp1>::other pol_type;</div><div class="line"><a name="l00656"></a><span class="lineno"> 656</span>  <span class="keyword">typedef</span> <a class="code" href="a10424.html">__mt_alloc<_Tp1, pol_type></a> other;</div><div class="line"><a name="l00657"></a><span class="lineno"> 657</span>  };</div><div class="line"><a name="l00658"></a><span class="lineno"> 658</span> </div><div class="line"><a name="l00659"></a><span class="lineno"> 659</span>  <a class="code" href="a10424.html">__mt_alloc</a>() _GLIBCXX_USE_NOEXCEPT { }</div><div class="line"><a name="l00660"></a><span class="lineno"> 660</span> </div><div class="line"><a name="l00661"></a><span class="lineno"> 661</span>  <a class="code" href="a10424.html">__mt_alloc</a>(<span class="keyword">const</span> <a class="code" href="a10424.html">__mt_alloc</a>&) _GLIBCXX_USE_NOEXCEPT { }</div><div class="line"><a name="l00662"></a><span class="lineno"> 662</span> </div><div class="line"><a name="l00663"></a><span class="lineno"> 663</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp1, <span class="keyword">typename</span> _Poolp1></div><div class="line"><a name="l00664"></a><span class="lineno"> 664</span>  <a class="code" href="a10424.html">__mt_alloc</a>(<span class="keyword">const</span> <a class="code" href="a10424.html">__mt_alloc<_Tp1, _Poolp1></a>&) _GLIBCXX_USE_NOEXCEPT { }</div><div class="line"><a name="l00665"></a><span class="lineno"> 665</span> </div><div class="line"><a name="l00666"></a><span class="lineno"> 666</span>  ~<a class="code" href="a10424.html">__mt_alloc</a>() _GLIBCXX_USE_NOEXCEPT { }</div><div class="line"><a name="l00667"></a><span class="lineno"> 667</span> </div><div class="line"><a name="l00668"></a><span class="lineno"> 668</span>  pointer</div><div class="line"><a name="l00669"></a><span class="lineno"> 669</span>  allocate(size_type __n, <span class="keyword">const</span> <span class="keywordtype">void</span>* = 0);</div><div class="line"><a name="l00670"></a><span class="lineno"> 670</span> </div><div class="line"><a name="l00671"></a><span class="lineno"> 671</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00672"></a><span class="lineno"> 672</span>  deallocate(pointer __p, size_type __n);</div><div class="line"><a name="l00673"></a><span class="lineno"> 673</span> </div><div class="line"><a name="l00674"></a><span class="lineno"> 674</span>  <span class="keyword">const</span> __pool_base::_Tune</div><div class="line"><a name="l00675"></a><span class="lineno"> 675</span>  _M_get_options()</div><div class="line"><a name="l00676"></a><span class="lineno"> 676</span>  { </div><div class="line"><a name="l00677"></a><span class="lineno"> 677</span>  <span class="comment">// Return a copy, not a reference, for external consumption.</span></div><div class="line"><a name="l00678"></a><span class="lineno"> 678</span>  <span class="keywordflow">return</span> __policy_type::_S_get_pool()._M_get_options();</div><div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  }</div><div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  </div><div class="line"><a name="l00681"></a><span class="lineno"> 681</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  _M_set_options(__pool_base::_Tune __t)</div><div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  { __policy_type::_S_get_pool()._M_set_options(__t); }</div><div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  };</div><div class="line"><a name="l00685"></a><span class="lineno"> 685</span> </div><div class="line"><a name="l00686"></a><span class="lineno"> 686</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Poolp></div><div class="line"><a name="l00687"></a><span class="lineno"> 687</span>  <span class="keyword">typename</span> __mt_alloc<_Tp, _Poolp>::pointer</div><div class="line"><a name="l00688"></a><span class="lineno"> 688</span>  <a class="code" href="a10424.html">__mt_alloc<_Tp, _Poolp>::</a></div><div class="line"><a name="l00689"></a><span class="lineno"> 689</span> <a class="code" href="a10424.html"> allocate</a>(size_type __n, <span class="keyword">const</span> <span class="keywordtype">void</span>*)</div><div class="line"><a name="l00690"></a><span class="lineno"> 690</span>  {</div><div class="line"><a name="l00691"></a><span class="lineno"> 691</span>  <span class="keywordflow">if</span> (__n > this->max_size())</div><div class="line"><a name="l00692"></a><span class="lineno"> 692</span>  std::__throw_bad_alloc();</div><div class="line"><a name="l00693"></a><span class="lineno"> 693</span> </div><div class="line"><a name="l00694"></a><span class="lineno"> 694</span> <span class="preprocessor">#if __cpp_aligned_new</span></div><div class="line"><a name="l00695"></a><span class="lineno"> 695</span>  <span class="comment">// Types with extended alignment are handled by operator new/delete.</span></div><div class="line"><a name="l00696"></a><span class="lineno"> 696</span>  <span class="keywordflow">if</span> (<span class="keyword">alignof</span>(_Tp) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)</div><div class="line"><a name="l00697"></a><span class="lineno"> 697</span>  {</div><div class="line"><a name="l00698"></a><span class="lineno"> 698</span>  std::align_val_t __al = std::align_val_t(<span class="keyword">alignof</span>(_Tp));</div><div class="line"><a name="l00699"></a><span class="lineno"> 699</span>  <span class="keywordflow">return</span> static_cast<_Tp*>(::<span class="keyword">operator</span> <span class="keyword">new</span>(__n * <span class="keyword">sizeof</span>(_Tp), __al));</div><div class="line"><a name="l00700"></a><span class="lineno"> 700</span>  }</div><div class="line"><a name="l00701"></a><span class="lineno"> 701</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00702"></a><span class="lineno"> 702</span> </div><div class="line"><a name="l00703"></a><span class="lineno"> 703</span>  __policy_type::_S_initialize_once();</div><div class="line"><a name="l00704"></a><span class="lineno"> 704</span> </div><div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  <span class="comment">// Requests larger than _M_max_bytes are handled by operator</span></div><div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  <span class="comment">// new/delete directly.</span></div><div class="line"><a name="l00707"></a><span class="lineno"> 707</span>  __pool_type& __pool = __policy_type::_S_get_pool();</div><div class="line"><a name="l00708"></a><span class="lineno"> 708</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> __bytes = __n * <span class="keyword">sizeof</span>(_Tp);</div><div class="line"><a name="l00709"></a><span class="lineno"> 709</span>  <span class="keywordflow">if</span> (__pool._M_check_threshold(__bytes))</div><div class="line"><a name="l00710"></a><span class="lineno"> 710</span>  {</div><div class="line"><a name="l00711"></a><span class="lineno"> 711</span>  <span class="keywordtype">void</span>* __ret = ::operator <span class="keyword">new</span>(__bytes);</div><div class="line"><a name="l00712"></a><span class="lineno"> 712</span>  <span class="keywordflow">return</span> static_cast<_Tp*>(__ret);</div><div class="line"><a name="l00713"></a><span class="lineno"> 713</span>  }</div><div class="line"><a name="l00714"></a><span class="lineno"> 714</span>  </div><div class="line"><a name="l00715"></a><span class="lineno"> 715</span>  <span class="comment">// Round up to power of 2 and figure out which bin to use.</span></div><div class="line"><a name="l00716"></a><span class="lineno"> 716</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> __which = __pool._M_get_binmap(__bytes);</div><div class="line"><a name="l00717"></a><span class="lineno"> 717</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> __thread_id = __pool._M_get_thread_id();</div><div class="line"><a name="l00718"></a><span class="lineno"> 718</span>  </div><div class="line"><a name="l00719"></a><span class="lineno"> 719</span>  <span class="comment">// Find out if we have blocks on our freelist. If so, go ahead</span></div><div class="line"><a name="l00720"></a><span class="lineno"> 720</span>  <span class="comment">// and use them directly without having to lock anything.</span></div><div class="line"><a name="l00721"></a><span class="lineno"> 721</span>  <span class="keywordtype">char</span>* __c;</div><div class="line"><a name="l00722"></a><span class="lineno"> 722</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> __pool_type::_Bin_record _Bin_record;</div><div class="line"><a name="l00723"></a><span class="lineno"> 723</span>  <span class="keyword">const</span> _Bin_record& __bin = __pool._M_get_bin(__which);</div><div class="line"><a name="l00724"></a><span class="lineno"> 724</span>  <span class="keywordflow">if</span> (__bin._M_first[__thread_id])</div><div class="line"><a name="l00725"></a><span class="lineno"> 725</span>  {</div><div class="line"><a name="l00726"></a><span class="lineno"> 726</span>  <span class="comment">// Already reserved.</span></div><div class="line"><a name="l00727"></a><span class="lineno"> 727</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> __pool_type::_Block_record _Block_record;</div><div class="line"><a name="l00728"></a><span class="lineno"> 728</span>  _Block_record* __block = __bin._M_first[__thread_id];</div><div class="line"><a name="l00729"></a><span class="lineno"> 729</span>  __bin._M_first[__thread_id] = __block->_M_next;</div><div class="line"><a name="l00730"></a><span class="lineno"> 730</span>  </div><div class="line"><a name="l00731"></a><span class="lineno"> 731</span>  __pool._M_adjust_freelist(__bin, __block, __thread_id);</div><div class="line"><a name="l00732"></a><span class="lineno"> 732</span>  __c = reinterpret_cast<char*>(__block) + __pool._M_get_align();</div><div class="line"><a name="l00733"></a><span class="lineno"> 733</span>  }</div><div class="line"><a name="l00734"></a><span class="lineno"> 734</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00735"></a><span class="lineno"> 735</span>  {</div><div class="line"><a name="l00736"></a><span class="lineno"> 736</span>  <span class="comment">// Null, reserve.</span></div><div class="line"><a name="l00737"></a><span class="lineno"> 737</span>  __c = __pool._M_reserve_block(__bytes, __thread_id);</div><div class="line"><a name="l00738"></a><span class="lineno"> 738</span>  }</div><div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  <span class="keywordflow">return</span> static_cast<_Tp*>(static_cast<void*>(__c));</div><div class="line"><a name="l00740"></a><span class="lineno"> 740</span>  }</div><div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  </div><div class="line"><a name="l00742"></a><span class="lineno"> 742</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Poolp></div><div class="line"><a name="l00743"></a><span class="lineno"> 743</span>  <span class="keywordtype">void</span></div><div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  __mt_alloc<_Tp, _Poolp>::</div><div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  deallocate(pointer __p, size_type __n)</div><div class="line"><a name="l00746"></a><span class="lineno"> 746</span>  {</div><div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  <span class="keywordflow">if</span> (__builtin_expect(__p != 0, <span class="keyword">true</span>))</div><div class="line"><a name="l00748"></a><span class="lineno"> 748</span>  {</div><div class="line"><a name="l00749"></a><span class="lineno"> 749</span> <span class="preprocessor">#if __cpp_aligned_new</span></div><div class="line"><a name="l00750"></a><span class="lineno"> 750</span>  <span class="comment">// Types with extended alignment are handled by operator new/delete.</span></div><div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  <span class="keywordflow">if</span> (<span class="keyword">alignof</span>(_Tp) > __STDCPP_DEFAULT_NEW_ALIGNMENT__)</div><div class="line"><a name="l00752"></a><span class="lineno"> 752</span>  {</div><div class="line"><a name="l00753"></a><span class="lineno"> 753</span>  ::operator <span class="keyword">delete</span>(__p, std::align_val_t(<span class="keyword">alignof</span>(_Tp)));</div><div class="line"><a name="l00754"></a><span class="lineno"> 754</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00755"></a><span class="lineno"> 755</span>  }</div><div class="line"><a name="l00756"></a><span class="lineno"> 756</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00757"></a><span class="lineno"> 757</span> </div><div class="line"><a name="l00758"></a><span class="lineno"> 758</span>  <span class="comment">// Requests larger than _M_max_bytes are handled by</span></div><div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  <span class="comment">// operators new/delete directly.</span></div><div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  __pool_type& __pool = __policy_type::_S_get_pool();</div><div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> __bytes = __n * <span class="keyword">sizeof</span>(_Tp);</div><div class="line"><a name="l00762"></a><span class="lineno"> 762</span>  <span class="keywordflow">if</span> (__pool._M_check_threshold(__bytes))</div><div class="line"><a name="l00763"></a><span class="lineno"> 763</span>  ::<span class="keyword">operator</span> <span class="keyword">delete</span>(__p);</div><div class="line"><a name="l00764"></a><span class="lineno"> 764</span>  <span class="keywordflow">else</span></div><div class="line"><a name="l00765"></a><span class="lineno"> 765</span>  __pool._M_reclaim_block(reinterpret_cast<char*>(__p), __bytes);</div><div class="line"><a name="l00766"></a><span class="lineno"> 766</span>  }</div><div class="line"><a name="l00767"></a><span class="lineno"> 767</span>  }</div><div class="line"><a name="l00768"></a><span class="lineno"> 768</span>  </div><div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Poolp></div><div class="line"><a name="l00770"></a><span class="lineno"> 770</span>  <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00771"></a><span class="lineno"> 771</span>  operator==(<span class="keyword">const</span> __mt_alloc<_Tp, _Poolp>&, <span class="keyword">const</span> __mt_alloc<_Tp, _Poolp>&)</div><div class="line"><a name="l00772"></a><span class="lineno"> 772</span>  { <span class="keywordflow">return</span> <span class="keyword">true</span>; }</div><div class="line"><a name="l00773"></a><span class="lineno"> 773</span>  </div><div class="line"><a name="l00774"></a><span class="lineno"> 774</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Poolp></div><div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  <span class="keyword">inline</span> <span class="keywordtype">bool</span></div><div class="line"><a name="l00776"></a><span class="lineno"> 776</span>  operator!=(<span class="keyword">const</span> __mt_alloc<_Tp, _Poolp>&, <span class="keyword">const</span> __mt_alloc<_Tp, _Poolp>&)</div><div class="line"><a name="l00777"></a><span class="lineno"> 777</span>  { <span class="keywordflow">return</span> <span class="keyword">false</span>; }</div><div class="line"><a name="l00778"></a><span class="lineno"> 778</span> </div><div class="line"><a name="l00779"></a><span class="lineno"> 779</span> <span class="preprocessor">#undef __thread_default</span></div><div class="line"><a name="l00780"></a><span class="lineno"> 780</span> </div><div class="line"><a name="l00781"></a><span class="lineno"> 781</span> _GLIBCXX_END_NAMESPACE_VERSION</div><div class="line"><a name="l00782"></a><span class="lineno"> 782</span> } <span class="comment">// namespace</span></div><div class="line"><a name="l00783"></a><span class="lineno"> 783</span> </div><div class="line"><a name="l00784"></a><span class="lineno"> 784</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="a00422_html"><div class="ttname"><a href="a00422.html">move.h</a></div></div>
<div class="ttc" id="a10412_html"><div class="ttname"><a href="a10412.html">__gnu_cxx::__per_type_pool_policy</a></div><div class="ttdoc">Policy for individual __pool objects.</div><div class="ttdef"><b>Definition:</b> <a href="a01049_source.html#l00555">mt_allocator.h:555</a></div></div>
<div class="ttc" id="a00356_html"><div class="ttname"><a href="a00356.html">functexcept.h</a></div></div>
<div class="ttc" id="a00242_html"><div class="ttname"><a href="a00242.html">cstdlib</a></div></div>
<div class="ttc" id="a01022_html"><div class="ttname"><a href="a01022.html">atomicity.h</a></div></div>
<div class="ttc" id="a10420_html"><div class="ttname"><a href="a10420.html">__gnu_cxx::__mt_alloc_base</a></div><div class="ttdoc">Base class for _Tp dependent member functions.</div><div class="ttdef"><b>Definition:</b> <a href="a01049_source.html#l00570">mt_allocator.h:570</a></div></div>
<div class="ttc" id="a01544_html"><div class="ttname"><a href="a01544.html">__gnu_cxx</a></div><div class="ttdoc">GNU extensions for public use.</div></div>
<div class="ttc" id="a00167_html"><div class="ttname"><a href="a00167.html">type_traits</a></div></div>
<div class="ttc" id="a10340_html"><div class="ttname"><a href="a10340.html">__gnu_cxx::__pool</a></div><div class="ttdoc">Data describing the underlying memory pool, parameterized on threading support.</div><div class="ttdef"><b>Definition:</b> <a href="a01049_source.html#l00192">mt_allocator.h:192</a></div></div>
<div class="ttc" id="a01477_html_ga1954d5552e24586051011312041033f6"><div class="ttname"><a href="a01477.html#ga1954d5552e24586051011312041033f6">std::__addressof</a></div><div class="ttdeci">constexpr _Tp * __addressof(_Tp &__r) noexcept</div><div class="ttdoc">Same as C++11 std::addressof.</div><div class="ttdef"><b>Definition:</b> <a href="a00422_source.html#l00047">move.h:47</a></div></div>
<div class="ttc" id="a10328_html"><div class="ttname"><a href="a10328.html">__gnu_cxx::__pool_base</a></div><div class="ttdoc">Base class for pool object.</div><div class="ttdef"><b>Definition:</b> <a href="a01049_source.html#l00051">mt_allocator.h:51</a></div></div>
<div class="ttc" id="a00032_html"><div class="ttname"><a href="a00032.html">new</a></div></div>
<div class="ttc" id="a10424_html"><div class="ttname"><a href="a10424.html">__gnu_cxx::__mt_alloc</a></div><div class="ttdoc">This is a fixed size (power of 2) allocator which - when compiled with thread support - will maintain...</div><div class="ttdef"><b>Definition:</b> <a href="a01049_source.html#l00639">mt_allocator.h:639</a></div></div>
<div class="ttc" id="a10388_html"><div class="ttname"><a href="a10388.html">__gnu_cxx::__common_pool_policy</a></div><div class="ttdoc">Policy for shared __pool objects.</div><div class="ttdef"><b>Definition:</b> <a href="a01049_source.html#l00460">mt_allocator.h:460</a></div></div>
<div class="ttc" id="a03040_html"><div class="ttname"><a href="a03040.html">std::integral_constant</a></div><div class="ttdoc">integral_constant</div><div class="ttdef"><b>Definition:</b> <a href="a00167_source.html#l00057">type_traits:57</a></div></div>
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